Tension device.



G. SIPP.

TENSION DEVICE.

APPLICATION FILED JAN.19, 1911.

1,022,5 12. Patented Apr. 9, 1912.

WITNESSES l/VV NTOR,

W? Gum/is 12 911,

'UNITED STATES PATENT orruon.

GRANT SIPP, OF PATERSON, NEW JERSEY.

TENSION DEVICE.

Specification of Letters latent.

Patented Apr. 9, 1912.

Application filed January 19, 1911. Serial No. 603,476.

which the following is a specification.

This invention relates to devices for im-' posing tension on thread in winding and other operations where the thread is drawn lengthwise and it consists in certain improvements in such devices having for their principal object to make the same variously adapted to different strengths and qualities of threads and yet in any case preserve the tension uniform and regular in character.

The particular type of tension device to which my invention relates is that in which the thread is caused to extend, -zig-zag fashion, back and forth around spaced guides of two members one of which is pivoted on an axis extending crosswise of the thread and capable of moving on its pivot toward and from the other so as to change the angle of its position relatively to that of the other member. According to my invention one of the said members is mounted so as to be capable of movement to vary the distance between the axis of movement of the pivoted member and the other member.

In the accompanying drawings fully illustrating the invention, Figure 1 is a side elevation thereof; Fig. 2 a front elevation; and, Fig. 3 a plan.

The thread is indicated by the broken line A and in the present adaptation of the invention extends vertically.

a a designate horizontal bars serving to a support the improved tension device; to

these, by means of a screw 0, are clamped plates d and 6 having, respectively, the arms d 'e' laterally offset with respect to each other, the arm d terminating in a boss f and the arm 6. terminating in a vertically elongated portion g; Secured to the upper and lower ends of portion 9 of arm 6 are the pigtails h and between these are secured the studs vi; the pigtails and studs form a vertically alined series of thread-guides spaced from each other substantially uniformly. To the boss f by means of a screw j is secured an arm is, the upper end-portion Z of which is forked; by releasing the screw this arm may be pivotally adjusted to throw of alinement with the aforementioned guides. The forked portion'of said arm carries a fixed horizontal pin m whose ends project laterally therefrom.

n is a lever having a long lower arm n and a short upper arm a", the latter extending in a curve at an angle to the arm n, overhanging the portion 9 of the arm d of plate 03 and having a longitudinal slot 0. The lever and a hook-shaped projection 22 thereof afford spaced bearings receiving the ends of the pin m, the said bearings snugly receiving between them the forked portion of the arm is so that the lever is confined solely to pivotal movement. By means of a screw 1' passed through the slot 0 a counterweight 8 is attached to the lever.

The long arm n of the lever carries the alined series of spaced studs t, forming thread guides and so disposed with respect to the thread guides k and i as to be opposite the spaces therebetween; The guides t and i are preferably shaped as they appear in Figs. 2 and 3.

The thread A is caused to pass in alternate engagement with the guides h and 2' on the one hand and those 25 on the other, the action of gravity on the counterbalanced lever and the pull of the thread cooperating tohold the lever about in the posit-ion shown in Fig. 1, and by changing the position of the counterweight or moving the arm is so that the fulcrum of the lever is disposed more or less away from the line occupied by the guides h and 2', or both, the tension may be readily varied as the circumstances require, it being observed that when arm 70 is adjusted the resistance opposed to the thread is altered partly because the-:aiiglessrepresented by its zig-zag portions are changed and partly because more or less surface of each guide ian'd t is exposed to the contact of the thread.

I do not wish to be limited to the specific construction herein shown and described, what I claim being.

1. thread-tension device comprising two thread-guiding members having threadguiding portions alternately engaged by the thread, one of said members being free to move pivotally toward and from the other cross-wise of the normal thread line and means, allowing shifting of one of said members toward and from said thread line, for adjustably supporting said last-named member in cooperative relation to the other member, substantially as described.

gpriding portions alternately engaged by the marine of said members being free to move. pivotally towardand from the other fcrosswlse of the normal thread hue and pivotedmeans, allowing shifting of one of said members toward and from said thread line, for ad'ustably 'supporting said lastnained mem er in cooperative relation to the other member, substantially as described.

3. A thread-tension device comprislng two thread-guiding members having threadguiding'portions alternately engaged by the thread, one of said members being free to move pivotally toward and from the other crosswise of the normal thread line and means, allowing shifting of .the pivoted member toward and from said thread line, for 'adjustably supporting said pivoted memher in cooperative relation to the other member, substantially as described.

4. A thread-guiding device acting to guide 'the thread in a general up and down direction and comprising two threads-guiding members havlng thread-guiding portions alternately engaged by the thread, one

of said members being pivotally movable on a substantially horizontal axis toward and from the other crosswise of. the normal thread line and means allowing shifting of said last-named member toward and from the normal thread line, for adjustably supporting said last-named member in. 006perative relation 'to the other member, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses. GRANT SIPP. Witnessesi R0131. N. CUNNINGHAM, Jr., JOHN W. STEWARD. 

